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Validate default homeserver config before loading the app
Implements the process described here: https://github.com/vector-im/riot-web/issues/9290#issuecomment-481966910 The expectation is that later layers (like the react-sdk) will make use of the `validated_discovery_config` option instead of interpreting the config themselves. We intentionally block the UI from loading here to avoid races between discovery and the app loading.
This commit is contained in:
Travis Ralston
parent
9cd4ac1df4
commit
f08491cee8
38
README.md
38
README.md
@ -109,25 +109,29 @@ You can configure the app by copying `config.sample.json` to
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For a good example, see https://riot.im/develop/config.json.
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1. `default_server_name` sets the default server name to use for authentication.
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This will trigger Riot to ask
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`https://<server_name>/.well-known/matrix/client` for the homeserver and
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identity server URLs to use. This is the recommended approach for setting a
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default server. However, it is also possible to use the following to directly
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configure each of the URLs:
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* `default_hs_url` sets the default homeserver URL.
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* `default_is_url` sets the default identity server URL (this is the server used
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for verifying third party identifiers like email addresses). If this is blank,
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registering with an email address, adding an email address to your account,
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or inviting users via email address will not work. Matrix identity servers are
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very simple web services which map third party identifiers (currently only email
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addresses) to matrix IDs: see http://matrix.org/docs/spec/identity_service/unstable.html
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for more details. Currently the only public matrix identity servers are https://matrix.org
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and https://vector.im. In the future, identity servers will be decentralised.
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* Riot will report an error if you accidentally configure both `default_server_name` _and_ `default_hs_url` since it's unclear which should take priority.
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1. `default_server_config` sets the default homeserver and identity server URL for
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Riot to use. The object is the same as returned by [https://<server_name>/.well-known/matrix/client](https://matrix.org/docs/spec/client_server/latest.html#get-well-known-matrix-client),
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with added support for a `server_name` under the `m.homeserver` section to display
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a custom homeserver name. Alternatively, the config can contain a `default_server_name`
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instead which is where Riot will go to get that same object - see the `.well-known`
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link above for more information.
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* *Note*: The URLs can also be individually specified as `default_hs_url` and
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`default_is_url`, however these are deprecated. They are maintained for backwards
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compatibility with older configurations. `default_is_url` is respected only
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if `default_hs_url` is used.
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* The identity server is used for verifying third party identifiers like emails
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and phone numbers. It is not used to store your password or account information.
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If not provided, the identity server defaults to vector.im unless `disable_identity_server`
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is set to true in the config. Currently the only two public identity servers
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are https://matrix.org and https://vector.im, however in future identity servers
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will be decentralised.
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* Riot will fail to load if a mix of `default_server_config`, `default_server_name`, or
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`default_hs_url` is specified. When multiple sources are specified, it is unclear
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which should take priority and therefore the application cannot continue.
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1. `features`: Lookup of optional features that may be `enable`d, `disable`d, or exposed to the user
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in the `labs` section of settings. The available optional experimental features vary from
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release to release.
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release to release. Some of the available features are described in the Labs Feature section
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of this README.
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1. `brand`: String to pass to your homeserver when configuring email notifications, to let the
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homeserver know what email template to use when talking to you.
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1. `branding`: Configures various branding and logo details, such as:
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@ -1,6 +1,14 @@
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{
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"default_hs_url": "https://matrix.org",
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"default_is_url": "https://vector.im",
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"default_server_config": {
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"m.homeserver": {
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"base_url": "https://matrix.org",
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"server_name": "matrix.org"
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},
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"m.identity_server": {
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"base_url": "https://vector.im"
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}
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},
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"disable_identity_server": false,
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"disable_custom_urls": false,
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"disable_guests": false,
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"disable_login_language_selector": false,
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@ -1,4 +1,7 @@
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{
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"Unexpected error preparing the app. See console for details.": "Unexpected error preparing the app. See console for details.",
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"Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.": "Invalid configuration: can only specify one of default_server_config, default_server_name, or default_hs_url.",
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"Unexpected error resolving homeserver configuration": "Unexpected error resolving homeserver configuration",
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"Riot Desktop on %(platformName)s": "Riot Desktop on %(platformName)s",
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"Unknown device": "Unknown device",
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"%(appName)s via %(browserName)s on %(osName)s": "%(appName)s via %(browserName)s on %(osName)s",
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@ -15,7 +18,5 @@
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"Need help?": "Need help?",
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"Chat with Riot Bot": "Chat with Riot Bot",
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"Explore rooms": "Explore rooms",
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"Room Directory": "Room Directory",
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"Search the room directory": "Search the room directory",
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"Get started with some tips from Riot Bot!": "Get started with some tips from Riot Bot!"
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"Room Directory": "Room Directory"
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}
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@ -45,6 +45,8 @@ import VectorConferenceHandler from 'matrix-react-sdk/lib/VectorConferenceHandle
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import Promise from 'bluebird';
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import request from 'browser-request';
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import * as languageHandler from 'matrix-react-sdk/lib/languageHandler';
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import {_t, _td} from 'matrix-react-sdk/lib/languageHandler';
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import {AutoDiscovery} from "matrix-js-sdk/lib/autodiscovery";
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import url from 'url';
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@ -341,22 +343,37 @@ async function loadApp() {
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const platform = PlatformPeg.get();
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platform.startUpdater();
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const MatrixChat = sdk.getComponent('structures.MatrixChat');
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window.matrixChat = ReactDOM.render(
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<MatrixChat
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onNewScreen={onNewScreen}
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makeRegistrationUrl={makeRegistrationUrl}
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ConferenceHandler={VectorConferenceHandler}
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config={configJson}
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realQueryParams={params}
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startingFragmentQueryParams={fragparts.params}
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enableGuest={!configJson.disable_guests}
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onTokenLoginCompleted={onTokenLoginCompleted}
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initialScreenAfterLogin={getScreenFromLocation(window.location)}
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defaultDeviceDisplayName={platform.getDefaultDeviceDisplayName()}
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/>,
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document.getElementById('matrixchat'),
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);
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// Don't bother loading the app until the config is verified
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verifyServerConfig().then((newConfig) => {
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const MatrixChat = sdk.getComponent('structures.MatrixChat');
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window.matrixChat = ReactDOM.render(
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<MatrixChat
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onNewScreen={onNewScreen}
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makeRegistrationUrl={makeRegistrationUrl}
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ConferenceHandler={VectorConferenceHandler}
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config={newConfig}
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realQueryParams={params}
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startingFragmentQueryParams={fragparts.params}
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enableGuest={!configJson.disable_guests}
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onTokenLoginCompleted={onTokenLoginCompleted}
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initialScreenAfterLogin={getScreenFromLocation(window.location)}
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defaultDeviceDisplayName={platform.getDefaultDeviceDisplayName()}
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/>,
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document.getElementById('matrixchat'),
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);
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}).catch(err => {
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console.error(err);
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const errorMessage = err.translatedMessage
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|| _t("Unexpected error preparing the app. See console for details.");
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// Like the compatibility page, AWOOOOOGA at the user
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const GenericErrorPage = sdk.getComponent("structures.GenericErrorPage");
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window.matrixChat = ReactDOM.render(
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<GenericErrorPage message={errorMessage} />,
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document.getElementById('matrixchat'),
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);
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});
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} else {
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console.error("Browser is missing required features.");
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// take to a different landing page to AWOOOOOGA at the user
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@ -428,4 +445,141 @@ async function loadLanguage() {
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}
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}
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async function verifyServerConfig() {
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console.log("Verifying homeserver configuration");
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// Errors which can be returned by .well-known lookups. If autodiscovery fails for unexpected reasons,
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// the last thing we want is "missing-translation|en:Your error here". The actual strings are also defined
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// in the react-sdk, so we don't need them here.
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const discoveryErrors = [
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"Invalid homeserver discovery response",
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"Failed to get autodiscovery configuration from server",
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"Invalid base_url for m.homeserver",
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"Homeserver URL does not appear to be a valid Matrix homeserver",
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"Invalid identity server discovery response",
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"Invalid base_url for m.identity_server",
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"Identity server URL does not appear to be a valid identity server",
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"General failure",
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];
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const config = SdkConfig.get();
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let wkConfig = config['default_server_config']; // overwritten later under some conditions
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const serverName = config['default_server_name'];
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const hsUrl = config['default_hs_url'];
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const isUrl = config['default_is_url'];
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const incompatibleOptions = [wkConfig, serverName, hsUrl].filter(i => !!i);
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if (incompatibleOptions.length > 1) {
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throw newTranslatableError(_td(
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"Invalid configuration: can only specify one of default_server_config, default_server_name, " +
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"or default_hs_url.",
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));
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}
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if (hsUrl) {
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console.log("Config uses a default_hs_url - constructing a default_server_config using this information");
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wkConfig = {
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"m.homeserver": {
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"base_url": hsUrl,
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},
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};
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if (isUrl) {
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wkConfig["m.identity_server"] = {
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"base_url": isUrl,
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};
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}
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}
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let result = null;
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if (wkConfig) {
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console.log("Config uses a default_server_config - validating object");
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result = await AutoDiscovery.fromDiscoveryConfig(wkConfig);
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}
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if (serverName) {
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console.log("Config uses a default_server_name - doing .well-known lookup");
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result = await AutoDiscovery.findClientConfig(serverName);
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}
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if (!result || !result["m.homeserver"]) {
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// This shouldn't happen without major misconfiguration, so we'll log a bit of information
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// in the log so we can find this bit of codee but otherwise tell teh user "it broke".
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console.error("Ended up in a state of not knowing which homeserver to connect to.");
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throw newTranslatableError(_td("Unexpected error resolving homeserver configuration"));
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}
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const hsResult = result['m.homeserver'];
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if (hsResult.state !== AutoDiscovery.SUCCESS) {
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if (discoveryErrors.indexOf(hsResult.error) !== -1) {
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throw newTranslatableError(hsResult.error);
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}
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throw newTranslatableError(_td("Unexpected error resolving homeserver configuration"));
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}
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const isResult = result['m.identity_server'];
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let preferredIdentityUrl = "https://vector.im";
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if (isResult && isResult.state === AutoDiscovery.SUCCESS) {
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preferredIdentityUrl = isResult["base_url"];
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} else if (isResult && isResult.state !== AutoDiscovery.PROMPT) {
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console.error("Error determining preferred identity server URL:", isResult);
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throw newTranslatableError(_td("Unexpected error resolving homeserver configuration"));
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}
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const preferredHomeserverUrl = hsResult["base_url"];
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let preferredHomeserverName = serverName ? serverName : hsResult["server_name"];
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const url = new URL(preferredHomeserverUrl);
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if (!preferredHomeserverName) preferredHomeserverName = url.hostname;
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// It should have been set by now, so check it
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if (!preferredHomeserverName) {
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console.error("Failed to parse homeserver name from homeserver URL");
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throw newTranslatableError(_td("Unexpected error resolving homeserver configuration"));
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}
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const isServerNameDifferentFromUrl = url.hostname !== preferredHomeserverName;
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console.log("Using homeserver config:", {
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isServerNameDifferentFromUrl,
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preferredHomeserverName,
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preferredHomeserverUrl,
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preferredIdentityUrl,
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});
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// Build our own discovery result for distribution within the app
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const configResult = {
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"m.homeserver": {
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"base_url": preferredHomeserverUrl,
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"server_name": preferredHomeserverName,
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"server_name_different": isServerNameDifferentFromUrl,
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},
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"m.identity_server": {
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"base_url": preferredIdentityUrl,
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"enabled": !SdkConfig.get()['disable_identity_server'],
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},
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};
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// Copy over any other keys that may be of interest
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for (const key of Object.keys(result)) {
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if (key === "m.homeserver" || key === "m.identity_server") continue;
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configResult[key] = JSON.parse(JSON.stringify(result[key])); // deep clone
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}
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// Add the newly built config to the actual config for use by the app
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console.log("Updating SdkConfig with validated discovery information");
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SdkConfig.add({"validated_discovery_config": configResult});
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return SdkConfig.get();
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}
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// Helper function to provide English errors in logs, but present translated
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// errors to users.
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function newTranslatableError(message) {
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const error = new Error(message);
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error.translatedMessage = _t(message);
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return error;
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}
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loadApp();
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